Use masking tape to protect watch lug surface after remove watch band.
Secondly, put the new bracelet on the lug and use spring bar tool to depressing down spring bar into watch lug.
Fine tune spring bar tip location to make sure it gets into the hole completely. Sound “Click” will be heard if the spring bar is properly installed.
Repeat on another side. And then hold both bracelet end firmly and pull apart to double check if the bracelet is securely installed.
Use links removal tool to help resizing length. MiLTAT metal bracelets are in screw links, just need a 1.5-1.8 mm tip diameter slot type screwdriver.
Remove the unwanted links.
Tighten the screw one by one.
Fine tune the ideal length along buckle’s micro holes.